package com.yedean.response;

import com.yedean.response.exception.ExceptionResponse;
import com.yedean.response.vo.PageVo;
import com.yedean.utils.Result;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * 返回结果统一转换
 *
 * @author yedean
 * @date 2022/9/15
 */
@RestControllerAdvice(basePackages = "com.yedean")
public class ResponseAdvisor implements ResponseBodyAdvice<Object> {
    
    @Override
    public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter methodParameter, MediaType mediaType, Class<? extends HttpMessageConverter<?>> aClass, ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {
        if (body instanceof Result){
            return body;
        }
        
        if (body instanceof Boolean){
            boolean result = (boolean)body;
            return new BaseResponse<Boolean>(result);
        }

        if (body instanceof PageVo){
            return new BaseResponse<>(body);
        }

        if (body instanceof ExceptionResponse){
            return new BaseResponse<>(400,((ExceptionResponse)body).getMsg());
        }

        return new BaseResponse<>(body);
    }
}
